I doubt you can do that.
A temporary volume with a moved_parent_temp prefix is created when a volume with active clone is moved to a different aggregate. These temporary volumes are kept offline, and exist until all the clone volumes are deleted from the source aggregate.
To see the parent clone dependencies:
::> volume clone show -vserver <vserver> -parent-volume moved_parent_temp__*
I guess, all the dependent clones (from the output above) must be either be deleted or split before you can delete parent temp vol.
I think it will error out if you try to delete it.
I hope that's your query ?